Abstract
In the first report, the airflow properties and thermal characteristics in the perimeter zone of an office window were evaluated by constructing an air barrier system that creates a push-pull air flow to remove heat entering through a window and enhances the adiabatic efficiency of the glass. This second report examines the heat extraction rate and shading effect of the window system. The air barrier system was evaluated by measurement of heat extraction rate and shading effect under a transfer thermal load attributable to a temperature difference inside and outside the window and a transmissive thermal load due to sunlight. The results confirmed that a shade attached inside the window can remove the transmissive thermal load in order to reduce the shading coefficient for sunlight. Thus, the efficacy of the air barrier system was confirmed.
